diff --git a/bin/prepare-release b/bin/prepare-release
index 6ae64fe9..0d4c1eb2 100755
--- a/bin/prepare-release
+++ b/bin/prepare-release
@@ -24,4 +24,4 @@ sed -i "s/\"version\": \"$CURRENT_BOWER_JSON_VERSION\"/\"version\": \"$NEW_VERSI
 # Update AUTHORS file
 sh bin/generate-authors
 
-git commit -S -a -m "Bump version to $NEW_VERSION"
+git commit -S -s -a -m "Bump version to $NEW_VERSION"